CN107723033A - A kind of dreg removing system of fixed bed slag gasification furnace - Google Patents
A kind of dreg removing system of fixed bed slag gasification furnace Download PDFInfo
- Publication number
- CN107723033A CN107723033A CN201711114434.4A CN201711114434A CN107723033A CN 107723033 A CN107723033 A CN 107723033A CN 201711114434 A CN201711114434 A CN 201711114434A CN 107723033 A CN107723033 A CN 107723033A
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- CN
- China
- Prior art keywords
- slag bath
- gasification furnace
- insulation cover
- fixed bed
- fire insulation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention relates to a kind of dreg removing system of fixed bed slag gasification furnace, including shock chamber and be arranged on the shock chamber top molten slag bath, the molten slag bath is in funnel-form, and storage slag bath is fastenedly connected in the bottom of the molten slag bath；The outer wall of the storage slag bath is fastenedly connected with downward opening fire insulation cover, in the inside of the shock chamber, smoke discharge pipe is set, the arrival end of the smoke discharge pipe is stretched into the fire insulation cover, the port of export passes the side wall of the shock chamber, in the side wall of the storage slag bath or bottom, scum pipe is set, bottom surface of the entrance of the scum pipe higher than the storage slag bath, burning spray gun is obliquely installed in the side wall of the shock chamber, the outlet and the outlet of the burning spray gun of the scum pipe are arranged in the fire insulation cover.
Description
Technical field
The present invention relates to a kind of dreg removing system of fixed bed slag gasification furnace, belong to coal gasification apparatus field.
Background technology
The deslagging slag bath that traditional fixed bed slag gasification furnace uses is mostly inverted cone-shaped structure, and deslagging slag bath inner surface is from upper
Gradually tapered up under, slag bath inner surface horizontal slope is in the range of 25 °~60 °.Deslagging passes through body of heater by the way of interval
Pressure difference between shock chamber controls deslagging.Specifically principle is：As the lime-ash of melting adds up in deslagging slag bath, melt cinder
Caused pressure difference gradually rises, and after reaching certain pressure difference, carries out deslagging, is discharged into melt cinder by the flue gas for diffusing shock chamber
Shock chamber, stop tapping process when pressure difference is less than certain value.
Slag bath bottom is provided with annular burner, is passed through combustion gas and oxygen-enriched air, and by burning, liberated heat ensures in slag bath
Melt cinder do not condense, while burn flue gas slag bath is entered by annular burner, play a part of support slag, therefore, the row of slag bath
Cinder notch can not be excessive.In actual moving process, the support slag gas velocity of annular burner is difficult to control, often result in slag discharge room every when cinder notch
There is melt cinder drippage, deposit and result in blockage on annular burner.In addition, melt cinder easily occurs to analyse iron phenomenon, and the density of iron
Bigger than the density of melt cinder, easily the slag-drip opening in bottom is enriched with, and causes the blocking of slag-drip opening, this is also to cause slag gasification furnace to stop
One big reason of stove.
The content of the invention
For problem present in background technology, and row easily controllable it is an object of the invention to provide a kind of tapping process
The dreg removing system for the fixed bed slag gasification furnace that slag pipe is not easily blocked.
To achieve the above object, the present invention uses following technical scheme：A kind of dreg removing system of fixed bed slag gasification furnace,
It is characterized in that：Including being arranged on the molten slag bath of gasification furnace bottom and positioned at the shock chamber of molten slag bath bottom, the molten slag bath being in
Funnel-form, storage slag bath is fastenedly connected in the bottom of the molten slag bath；The outer wall of the storage slag bath is fastenedly connected with downward opening
Fire insulation cover, smoke discharge pipe is set in the inside of the shock chamber, the arrival end of the smoke discharge pipe stretches into the fire insulation cover
In, the port of export passes the side wall of the shock chamber, and scum pipe is set in the side wall of the storage slag bath or bottom, the scum pipe
Entrance is obliquely installed burning spray gun, the scum pipe goes out higher than the bottom surface of the storage slag bath in the side wall of the shock chamber
The outlet of mouth and the burning spray gun is arranged in the fire insulation cover.
Coolant is housed in the shock chamber, the openend of the fire insulation cover is less than the liquid level of coolant, the fire insulation
Cover and the liquid level of the coolant form a confined space, and the arrival end of the smoke discharge pipe is higher than the liquid level of coolant；
The diffusion valve of control exhaust is provided with the smoke discharge pipe, the pipeline of the smoke discharge pipe, which spirals, is arranged on the cooling
In liquid.
Angle β meets 0 °≤β≤90 ° between the center line and horizontal plane of the scum pipe.
For the fire insulation cover in cube or cylindrical tubular structure, the fire insulation cover uses air-cooled structure, and inwall is set
There is gas vent.
The burning spray gun uses multi-channel structure, it include be used for be passed through combustion gas central tube and ring be located at the center
The outside endless tube for being used to be passed through air of pipe periphery.
The bottom of the shock chamber is provided with and communicated with a Residue extraction pipeline；The scum pipe uses water-cooling structure.
The side wall of the molten slag bath and the storage slag bath includes the refractory material and water-cooling wall set from inside to outside.
The refractory material includes refractory brick and ramming mass, and the refractory brick uses microporous corundum brick, carbon composite brick or plug
Grand combined corundum brick；The ramming mass is made up of refractory aggregate, refractory powder, bonding agent and steel fibre.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention includes molten slag bath and storage slag bath,
Scum pipe is arranged on storage slag bath, and the outlet of scum pipe and the outlet of fuel nozzle ports are arranged on the open fire insulation in the closed bottom in top
In cover, the opening end of fire insulation cover is arranged on below cooling-liquid level, and heat smoke is entered by scum pipe caused by burning spray gun
Store up in slag bath, therefore the melt cinder stored up in slag bath be in preferable flow regime to prevent melt cinder in deslagging in-tube condensation, simultaneously and also
Play a part of holding in the palm slag.2nd, deslagging slag bath of the invention uses Split type structure, therefore can only change easily worn part, reduces maintenance slag
The cost in pond.3rd, deslagging tube inlet is higher than slag bath bottom in the present invention, make the deposition of iron that is separated out in melt cinder slag bath bottom without
It can be deposited in scum pipe, therefore effectively avoid deslagging blockage caused by analysing iron.4th, burning spray gun of the invention passes through Quench
Passage in the side wall of room is stretched into shock chamber, therefore easy to operate when burning spray gun repairs or changes.5th, fire insulation in the present invention
Cover makes high-temperature flue gas caused by burning lance combustion in it corrode less than connection molten slag bath with storing up the flange of slag bath, therefore is protected
Defend the doctrine orchid, avoid often maintenance and change flange.
Brief description of the drawings
Fig. 1 is the overall structure diagram of deslagging slag bath of the present invention；
Fig. 2 is the structural representation of present invention storage slag bath.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, the present invention proposes a kind of dreg removing system of fixed bed slag gasification furnace, and it includes setting
In the molten slag bath 2 of gasification furnace bottom and positioned at the shock chamber 1 of the bottom of molten slag bath 2.Wherein, molten slag bath 2 is in funnel-form, in molten slag bath
Bottom be fastenedly connected storage slag bath 3.The outer wall of storage slag bath 3 is fastenedly connected with downward opening fire insulation cover 5, is contained in shock chamber 1
Equipped with coolant.Smoke discharge pipe 8 is set in the inside of shock chamber 1, the arrival end of smoke discharge pipe 8 is stretched into fire insulation cover 5, gone out
Mouthful end passes the side wall of shock chamber 1, its be used for by melt cinder cool down caused by fume emission to the external world.In the side wall of storage slag bath 3
Or bottom sets scum pipe 4, the entrance of scum pipe 4 is higher than the bottom surface for storing up slag bath 3, therefore the iron separated out in melt cinder will be deposited on storage
The bottom of slag bath 3, avoid analysing the outlet obstruction that iron causes scum pipe 4.Burning spray gun 7 is obliquely installed in the side wall of shock chamber 1,
The outlet of scum pipe 4 is respectively positioned in fire insulation cover 5 with the outlet of burning spray gun 7, and heat smoke caused by burning spray gun 7 passes through scum pipe
4 enter storage slag bath 3 in, ensure storage slag bath 3 in melt cinder be in preferable flow regime with prevent melt cinder in scum pipe 4 it is cold
It is solidifying, while also act as the effect of support slag.
In above-described embodiment, the liquid level of coolant is higher than the openend of fire insulation cover 5, fire insulation cover 5 and the liquid level shape of coolant
Into a confined space, the arrival end of smoke discharge pipe 8 is higher than the liquid level of coolant, and control row is provided with smoke discharge pipe 8
The diffusion valve of gas, the pipeline of smoke discharge pipe 8, which spirals, to be arranged in the coolant of shock chamber 1, when the pressure in fire insulation cover 5 reaches
Diffusion valve is opened after certain value, and smoke discharge pipe 8 discharges flue gas, so as to play a part of controlling pressure in fire insulation cover 5.
In above-described embodiment, angle is β between the center line and horizontal plane of scum pipe 4, meets 0 °≤β≤90 °, scum pipe
4 are integral casting and use water-cooling structure, and it is fixed on storage slag bath 3 by flange, can be easy to more when scum pipe 4 damages
Change.
In above-described embodiment, the upper end of storage slag bath 3 is connected by flange with the lower end of molten slag bath 2.
In above-described embodiment, for fire insulation cover 5 in the tubular structure of cube or cylinder, fire insulation cover 5 uses air-cooled structure, interior
Wall is provided with gas vent, avoids fire insulation cover 5 from being burnt, and it is molten less than connection that fire insulation cover 5 corrodes high-temperature flue gas caused by burning
The flange of slag bath 2 and storage slag bath 3, therefore be able to protect flange.
In above-described embodiment, burning spray gun 7 uses multi-channel structure, and it includes central tube and ring is located at central tube periphery
Outside endless tube, central tube are passed through combustion gas, and outside endless tube is passed through air or oxygen-enriched air, the side wall that burning spray gun 7 passes through shock chamber 1
On passage stretch into inside deslagging slag bath.
In above-described embodiment, the bottom of shock chamber 1 is provided with and communicated with a Residue extraction pipeline 6, easily can be arranged venting by it
Slag pipe 4 comes melt cinder in shock chamber 1.
In above-described embodiment, the side wall of molten slag bath 2 and storage slag bath 3 includes the refractory material and the water cooling that set from inside to outside
Wall.Refractory material includes refractory brick and ramming mass etc., and refractory brick has the ability that stronger anti-clinker and molten iron corrode, preferred microporous
Corundum brick, carbon composite brick, Sialon combined corundum brick etc..Ramming mass, preferably steely fiber fireproof material, it is by refractory aggregate, resistance to
Fiery powder, bonding agent and steel fibre composition；The preferred fine copper structure of water-cooling wall, pre-buried cooling water pipe material can use fine copper, steel
Or spheroidal graphite cast-iron, preferably steel.
The operation principle of the deslagging slag bath of the present invention is as follows：
The deslagging slag bath of the present invention is supported the use with gasification furnace, and the upper end of shock chamber 1 is connected with the lower end for the furnace body that gasifies,
Caused melt cinder is pooled in storage slag bath 3 by molten slag bath 2 in gasification furnace gasification, is constantly accumulated in storage slag bath 3；Burning
Heat smoke caused by spray gun 7 is entered in storage slag bath 3 by scum pipe 4, ensures that the melt cinder in storage slag bath 3 is in preferably flowing
State also acts as the effect of support slag to prevent melt cinder from being condensed in scum pipe 4.
After the pressure difference in gasification furnace and fire insulation cover 5 increases to certain value, the diffusion valve on smoke discharge pipe 8 is opened to drop
Pressure in low fire insulation cover 5, while the gas flow rate of burning spray gun 7 is reduced, carry out deslagging；When in gasification furnace and fire insulation cover 5
After pressure difference is reduced to certain value, the diffusion valve on closing smoke discharge pipe 8, while the gas flow rate of burning spray gun 7 is improved, stop
Deslagging, a tapping process is completed in summary.
During gasifier operation, such as it is in the presence of stopping in emergency, by controlling burning spray gun 7 to spray into gasification furnace
The flow velocity of gas, avoid melt cinder from entering in scum pipe 4 and condense, result in blockage, influence being again started up for gasification furnace.
The present invention is only illustrated with above-described embodiment, and structure, set location and its connection of each part are all to have
Changed, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and equivalent
Conversion, should not be excluded outside protection scope of the present invention.
Claims (8)
- A kind of 1. dreg removing system of fixed bed slag gasification furnace, it is characterised in that：Molten slag bath including being arranged on gasification furnace bottom Be in funnel-form positioned at the shock chamber of molten slag bath bottom, the molten slag bath, be fastenedly connected storage slag bath in the bottom of the molten slag bath； The outer wall of the storage slag bath is fastenedly connected with downward opening fire insulation cover, and smoke discharge pipe is set in the inside of the shock chamber, The arrival end of the smoke discharge pipe is stretched into the fire insulation cover, and the port of export passes the side wall of the shock chamber, in the storage slag The side wall in pond or bottom set scum pipe, and the entrance of the scum pipe is higher than the bottom surface for storing up slag bath, in the shock chamber Burning spray gun is obliquely installed in side wall, the outlet and the outlet of the burning spray gun of the scum pipe are arranged at the fire insulation cover It is interior.
- A kind of 2. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：In the shock chamber In coolant is housed, the openend of the fire insulation cover is less than the liquid level of coolant, the fire insulation cover and the liquid level of the coolant A confined space is formed, the arrival end of the smoke discharge pipe is higher than the liquid level of coolant；Set on the smoke discharge pipe There is the diffusion valve that control is vented, the pipeline of the smoke discharge pipe, which spirals, to be arranged in the coolant.
- A kind of 3. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：The scum pipe Angle β meets 0 °≤β≤90 ° between center line and horizontal plane.
- A kind of 4. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：The fire insulation cover is in The tubular structure of cube or cylinder, the fire insulation cover use air-cooled structure, and inwall is provided with gas vent.
- A kind of 5. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：The burning spray gun Using multi-channel structure, it include being used for the central tube for being passed through combustion gas and ring be located at the central tube periphery be used for be passed through air Outside endless tube.
- A kind of 6. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：The shock chamber Bottom is provided with and communicated with a Residue extraction pipeline；The scum pipe uses water-cooling structure.
- A kind of 7. dreg removing system of fixed bed slag gasification furnace as claimed in claim 1, it is characterised in that：The molten slag bath and The side wall of the storage slag bath includes the refractory material and water-cooling wall set from inside to outside.
- A kind of 8. dreg removing system of fixed bed slag gasification furnace as claimed in claim 8, it is characterised in that：The refractory material Comprising refractory brick and ramming mass, the refractory brick uses microporous corundum brick, carbon composite brick or Sialon combined corundum brick；The ramming Material is made up of refractory aggregate, refractory powder, bonding agent and steel fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114434.4A CN107723033B (en) | 2017-11-13 | 2017-11-13 | Slag discharging system of fixed bed slag gasifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114434.4A CN107723033B (en) | 2017-11-13 | 2017-11-13 | Slag discharging system of fixed bed slag gasifier |
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| CN107723033A true CN107723033A (en) | 2018-02-23 |
| CN107723033B CN107723033B (en) | 2023-09-12 |
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|---|---|---|---|---|
| US4180387A (en) * | 1977-08-30 | 1979-12-25 | Metallgesellschaft Aktiengesellschaft | Process for removing slag during pressure gasification of solid fuels |
| CN103436296A (en) * | 2013-09-11 | 2013-12-11 | 上海泽玛克敏达机械设备有限公司 | Slag gasifier for pressurized fixed bed |
| CN203999518U (en) * | 2014-03-10 | 2014-12-10 | 武汉凯迪工程技术研究总院有限公司 | Biomass liquid deslagging vapourizing furnace |
| US20150014594A1 (en) * | 2012-02-13 | 2015-01-15 | Envirotherm Gmbh | Process and apparatus for molten slag gasification of solid fuels |
| CN104327881A (en) * | 2014-10-16 | 2015-02-04 | 煤炭科学技术研究院有限公司 | Liquid continuous slag-removal fixed bed gasification furnace and gasification method thereof |
| CN204224549U (en) * | 2014-10-16 | 2015-03-25 | 煤炭科学技术研究院有限公司 | A kind of annular burner of fixed bed slag tap vapourizing furnace |
| CN204325270U (en) * | 2014-10-16 | 2015-05-13 | 煤炭科学技术研究院有限公司 | Liquid continuous discharging slag fixed-bed gasification furnace |
| CN205133529U (en) * | 2015-10-15 | 2016-04-06 | 上海锅炉厂有限公司 | High temperature gasification result quench transform purifier |
| CN106590749A (en) * | 2017-02-08 | 2017-04-26 | 中国东方电气集团有限公司 | Liquid slagging device for fixed bed slag gasifier |
| CN207862273U (en) * | 2017-11-13 | 2018-09-14 | 煤炭科学技术研究院有限公司 | The dreg removing system of fixed bed slag gasification furnace |
-
2017
- 2017-11-13 CN CN201711114434.4A patent/CN107723033B/en active Active
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